Bukkit

As of version 1.3.2 command aliases were started to be introduced they work by just adding lines to the config like so:

Commands:
  balance:
  - bal
  - balance
  - tok

These would add the commands /bal, /balance and /tok that all would display the player's tokens.

If you wanted to disable these or leave them blank they should be formatted as so:

Commands:
  balance: []